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在系統(tǒng)開發(fā)中控件應考慮版本 ,維護和其他問題。 批注 :標題應該是 3 字號的標題,且不應被指定一個號碼。 。實踐證明,采用該系統(tǒng)結構可以開發(fā)出有效、安全的網(wǎng)絡應用軟件。當系統(tǒng)結構變化,控件應該能繼續(xù)被使用。其次,控件的開發(fā)應該考慮到常用功能。當然,這樣會增加開發(fā)的難度。所以客戶可以訪問動態(tài)實時信息和通過 IE 訪問歷史信息。 OBJECT ID=”Syspic”CLASSID=”CLSID:795BA4252FA311D38BEA 00105A5ED4 ” CODEBASE=” 0, 0, 0” WIDTH=”798” HEIGHT=”658” ALIGN=”center”/OBJECT 這里, 必須提供 ClassID 和文件路徑或 OCX 的 URL。另一個是人們自己定義基表,數(shù)據(jù)通過程序放在基表里。圖形渲染可以運用在 Delphi 的 DBChart 或一些ActiveX 控件圖形顯示。數(shù)據(jù)查詢使用 SQL 語句來實現(xiàn),它可以很容易地插入到 ADOQuery。接下來,我們簡要介紹他們的方法: (1)數(shù)據(jù)查詢控件:控件為用戶提供了數(shù)據(jù)查詢接口。 測量用來顯示柱形圖表。 Active 表單的動態(tài)控件包括以下主要 Delphi 控件: ADO 表格是以 ADO 模式用來訪問數(shù)據(jù)庫服務器的表格。 圖 1是用來顯示系統(tǒng)中現(xiàn)場數(shù)據(jù)和條形圖的 ActiveX 動態(tài)控件。 Active 表單編譯的 ActiveX 控件很方便,你可以在 Active 表單嵌入圖形控件或非圖形控件。這種方法的速度比 ASP 快得多。 ADO 控件下載到本地計算機上無需數(shù)據(jù)庫配置就擁有更多功能。在控件下載到客戶端計算機之后,控件連接網(wǎng)絡數(shù)據(jù)庫讀取實時數(shù)據(jù)和基于數(shù)據(jù)生成圖形。 其次,在互聯(lián)網(wǎng) /網(wǎng)絡的 ActiveX 控件自動的下載到本地之后,它將成為供本地計算機以后使用的資源。光利用 ASP 和其它純網(wǎng)絡技術很難實現(xiàn)動態(tài)圖形的顯示,但 ActiveX 控件技術是非常適合互聯(lián)網(wǎng) /網(wǎng)絡應用。 ADO 技術支持 VBScript, JavaScript 和其他有遠程數(shù)據(jù)服務特點的腳本語言,尤其是支持在互聯(lián)網(wǎng) /網(wǎng)絡環(huán)境對數(shù)據(jù)庫的訪問。他們能運 行在其他程序的服務器,也可以被自動下載到客戶端運行,從而能提高瀏覽速度。 ActiveX 控件技術是 ActiveX 按要求的ActiveX 控件用來編寫一些界面程序或復雜的程序塊 (含有豐富的圖形、圖像、等等 )中的核心技術。 近年來,隨著互聯(lián)網(wǎng) /網(wǎng)絡功能要求的提高,出現(xiàn)了許多新的技術來擴展互聯(lián)網(wǎng)能力,它使這些假設成為可能, ActiveX 技術基于 COM 組件 (組件對象模型 )和 Win32API(Window 的 32 位應用程序接口 )尤其引人注目。在本篇論文中,我們根據(jù)工作經(jīng)驗給出了應用實 例,這個應用實例介紹了在 B / S 系統(tǒng)結構(瀏覽器和服務器結構)中如何應用 ActiveX 技術和 ADO( ActiveX 控件存取 存取數(shù)據(jù)源的 COM 組件)。 英文原文 Application of ActiveX Technology in the Remote Dynamic Monitoring System Xiaohui Mo and Yi Zhang Abstract. For the purpose of implementing industry remote Dynamic monitor based on the web in the MIS, the structure of system is the thin client model as Browser/Server, the html files which embraced ActiveX controls are downloaded on the client, the method of ActiveX control is called to access data port, and the remote data on the client are transferred by the way of the paper, an application example is given according to the working experience, which introduces how to apply the technology of ActiveX and ADO to B/S system structure. It is proved by practice that efficient and secure inter application software can be developed by adopting this system structure. Keywords: B/S, ActiveX, ADO, Dynamic Monitor System. 1 Introduction With the rapidly development of inter/intra technology, the work environment is constantly updated, and the browser technology is being more perfect, it is imperative to build remote dynamic monitoring system based on B/ purpose of research and development for the system is to require it to breakthrough the current closed situation of the general monitoring system, and browse the dynamic situation with browser on intra everywhere, and make the level of automation, operation management, economic and human investment and other aspects of enterprise in the higher cost performance. Recent years, with the functional requirements improving of inter/intra, many new technologies emergence to expand inter capabilities, it makes possible for those assumptions, the ActiveX technology based on the Component Object Model (COM) and Windows 32bit application program interface (Win32API) is especially eyecatching. In the paper, we discuss an application method of ActiveX technology in the development of dynamic remote monitoring system in a steel plant for readers to learn. 2 Key Technologies of System Development ActiveX Technology ActiveX is the technology that Microsoft provide the majority of developers to integrate the puter d